SPL310 Alternator Options

Tech tips and how to's

Moderators: notoptoy, S Allen, Solex68

User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

SPL310 Alternator Options

Post by car_cursed »

My OEM alternator has started making noise, from what I see I cannot buy a new one. In the interest of leaving the car original I would rather not try to convert it. Is a rebuild my only option or is there an exchange part that bolts in?

Ugh the trials and tribulations of a relatively rare car. Having same issues with my 1960 bug with one year only parts. Why do I do this to myself?

Picture of the back from when I did the fuel pump.

Image
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
datsun65
Roadsteraholic
Posts: 1873
Joined: Wed Nov 19, 2003 11:55 pm
Location: Texas
Model: 2000
Year: Low Windshield-64-67.5

Re: SPL310 Alternator Options

Post by datsun65 »

If the car is still running positive ground (snap a picture of the Plate on the top of the alternator, it should say positive ground) , I'd suggest you rebuild the original. That would be the easiest route. Not too big of a deal.

If the car is all ready converted to negative ground, there are many replacement options.
Dan
Houston, TX
User avatar
spl310
Roadster Guru
Posts: 13241
Joined: Sun Dec 29, 2002 10:38 pm
Location: In front of this keyboard... in Jacksonville, Florida!

Re: SPL310 Alternator Options

Post by spl310 »

If it is just noisy, you can replace the bearings - not much drama in that.
"Wow, a Roadster!" Stuart Little

1967.5 2000
1967.5 2000
1964 1500
1964 1500
1967.5 1600
1968 chassis
2006 Acura MDX
2013 Volkswagen Jetta TDI wagon
1995 F350 Powerstroke!
More...
User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

Re: SPL310 Alternator Options

Post by car_cursed »

It's a positive ground, I know this because I always put the damn battery in backwards.
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
User avatar
GeoffM
Roadster Fanatic-Site Supporter
Posts: 1634
Joined: Thu May 22, 2008 2:28 pm
Location: Vancouver BC

Re: SPL310 Alternator Options

Post by GeoffM »

Funny thing is that the most useful and detailed part of the service manual is the alternator and starter rebuild sections.
Geoff
1969 SPL-311
User avatar
Nissanman
Roadster Fanatic-Site Supporter
Posts: 3452
Joined: Mon Apr 16, 2007 8:07 pm
Location: Adelaide, South Australia
Model: 1500/1600
Year: Low Windshield-64-67.5
Contact:

Re: SPL310 Alternator Options

Post by Nissanman »

Noise can also be as simple as worn brushes.
Anyhoo, like ^^ said, take it to an Auto Electrician and ask for bearing replacement or DIY if you want.
WARNING: Make sure that anyone who works on it are aware that it is POSITIVE GROUND :shock:
Nissanman, just trying to help.
1965 SP310 Engine No. G-93326 Car No. SP310-10817
https://photos.shutterfly.com/album/60141836519
On the road again!
bergcc
Roadster Fanatic
Posts: 111
Joined: Sun Mar 16, 2014 7:51 am

Re: SPL310 Alternator Options

Post by bergcc »

I had a fire that BBQ'd by alternator. I purchased a new one from DatsunParts.com and it works fine. Just pay attention to the wiring diagram. You will also be able to disconnect your voltage regulator post operation.

http://datsunparts.com/Electrical

I have two others that I could have rebuilt but I chose something new for reliability. It's a tighter fit for sure, but I did get my existing belt to work.

-ccb
69-70 311 in Pittsburgh
bergcc
Roadster Fanatic
Posts: 111
Joined: Sun Mar 16, 2014 7:51 am

Re: SPL310 Alternator Options

Post by bergcc »

My argument is if I still have all the stock parts, someone could still piece it back together at a cost. =)
69-70 311 in Pittsburgh
User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

Re: SPL310 Alternator Options

Post by car_cursed »

Well, the alternator gave up yesterday started smoking. I'll be calling a couple places Monday to see about a rebuild. I was hoping to purchase a spare, but was out bid on the only one I could find. I'll keep a look out.

Those who have had their alternator rebuilt, what was the cost?
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
User avatar
jarhead
Roadster Enthusiast
Posts: 230
Joined: Sun Sep 09, 2012 11:55 am
Location: Fairfield, CT

Re: SPL310 Alternator Options

Post by jarhead »

I had my early 66 alternator rebuilt for about $100. The problem was finding a voltage regulator for early plug. Can't find them anywhere.
Lee
'66 SPL311-00676
User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

Re: SPL310 Alternator Options

Post by car_cursed »

Got word back from the shop that is rebuilding the alternator, said it was pretty well damaged, and is going to be 4 more than double the initial estimate to repair. Oh well, needs to be done...
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
User avatar
spl310
Roadster Guru
Posts: 13241
Joined: Sun Dec 29, 2002 10:38 pm
Location: In front of this keyboard... in Jacksonville, Florida!

Re: SPL310 Alternator Options

Post by spl310 »

PM sent
"Wow, a Roadster!" Stuart Little

1967.5 2000
1967.5 2000
1964 1500
1964 1500
1967.5 1600
1968 chassis
2006 Acura MDX
2013 Volkswagen Jetta TDI wagon
1995 F350 Powerstroke!
More...
User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

Re: SPL310 Alternator Options

Post by car_cursed »

Picked up my new rebuilt alternator, looks great. Shop said when they opened it, it just fell apart. So it has likely never been rebuilt.

Image

Image
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
User avatar
car_cursed
Roadster Fanatic
Posts: 168
Joined: Mon Jan 18, 2016 11:42 am
Location: Salt Lake

Re: SPL310 Alternator Options

Post by car_cursed »

And they neglected to properly tighten the nut holding on the pulley... It came off and so did the pulley breaking a couple fins in the process and the threads for the shaft are damaged so I could not even get a new nut on it. It's going back with a rather frank discussion. We will see what can be done about the pulley and fins but I might be SOL on that front.
64 3 seater 1500
72 Vespa small frame 90
58 VW Ragtop Bug
JT68
Talented Enthusiast
Posts: 2962
Joined: Sun Jan 27, 2013 9:43 am
Location: Cumming, GA

Re: SPL310 Alternator Options

Post by JT68 »

bergcc wrote:I had a fire that BBQ'd by alternator. I purchased a new one from DatsunParts.com and it works fine. Just pay attention to the wiring diagram. You will also be able to disconnect your voltage regulator post operation.

http://datsunparts.com/Electrical


-ccb

This will not work at all for the spl310 which is positive ground. Will cause a complete melt down/fire.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
Post Reply